Dear Editor,The recent report on “tuberculosis and lung cancer” is very interesting.[1] Bhatt et al.,[1] concluded that “patients with lung cancer are often misdiagnosed as pulmonary tuberculosis (TB) leading to delay in the correct diagnosis as well as exposure to inappropriate medication.” In fact, the problem of missed diagnosis of lung cancer as TB can be a serious problem and can be commonly seen in clinical practice in endemic area of TB. According to the study by Singh et al.,[2] several lung cancerpatients got anti-TB drug before final diagnosis of lung cancers. Nevertheless, it should also be noted that the concomitant occurrence between TB lung and lung cancer is also possible.[3] To carefully investigate on the possible concurrent disorders is also very important in clinical practice.